macOS 27.2 no longer removes Rosetta during upgrades

Apple's enterprise release notes for macOS 27.2 say upgrading to macOS 27 no longer removes an existing Rosetta installation. macOS 27 remains the final release with full Rosetta support, and Apple will begin phasing out general-purpose support with macOS 28.

• macOS 27.2 keeps an existing Rosetta install during upgrades
• macOS 27 is the last release with full Rosetta support
• Apple will phase out general-purpose Rosetta support from macOS 28